All of the calculations I have seen used to sell this idea have one major flaw. They assume that the price per kWh is constant. Given the general trend of any US corporation is to at least attempt to replace lost revenue; If enough people reduce energy consumption it is very likely that the utility companies will simply raise rates. In the end, the consumer will pay more both up front and in the long term.

Tablet vs e-ink aside; Can the average slashdot reader withstand that much direct sunlight without injury?

rights != entitlements In the US I (supposedly) have the right to bear arms and the right to freedom of the press. That does not mean that the government has to provide me with an AK-47 or a printing press.

Schwans http://www.schwans.com/ has delivered ice cream for a long time now.

I have taken classes both at Udacity and Stanford. I found that the Stanford class was more like a traditional classroom brought online. The Udacity course felt like it was designed from the beginning as an online experience.